Bringing Your World into Focus: Understanding Astigmatism
What is Astigmatism?
Astigmatism is a common refractive error where the cornea or lens has an irregular shape, causing light to focus on multiple points in the eye instead of one.
Key Points:
- Affects both near and far vision
- Can occur alongside myopia or hyperopia
- Often present from birth
- May develop or change over time
Common Symptoms:
- Blurred or distorted vision at all distances
- Eye strain and headaches
- Difficulty seeing at night, especially while driving
- Squinting or tilting head to see clearly
Did You Know?
- Approximately 1 in 3 people have some degree of astigmatism
- It’s not a disease or eye health problem
- Even mild astigmatism can cause discomfort and reduced vision quality
Don’t let astigmatism blur your perspective on life!
Diagnostic Techniques
Accurate diagnosis of astigmatism involves several methods:
- Visual Acuity Test: Measures vision clarity using a standard eye chart.
- Keratometry: Measures the curvature of the cornea’s surface.
- Corneal Topography: Creates a detailed 3D map of the cornea’s surface.
- Refraction Test: Determines the exact lens prescription needed for clear vision.
- Wavefront Analysis: Provides a highly detailed map of vision errors across the entire optical system of the eye.
Laser Vision Correction Approaches
Laser vision correction offers a long-term solution for astigmatism. Common procedures include:
LASIK (Laser-Assisted In Situ Keratomileusis)
- A thin corneal flap is created
- Laser reshapes the underlying corneal tissue to correct the irregular curvature
- The flap is repositioned
- Quick recovery, with most patients seeing clearly within 24-48 hours
PRK (Photorefractive Keratectomy)
- The outer layer of the cornea (epithelium) is removed
- Laser reshapes the cornea to correct the irregular curvature
- The epithelium regrows naturally
- Longer recovery time but suitable for those with thin corneas
SMILE (Small Incision Lenticule Extraction)
- A small lens-shaped bit of tissue (lenticule) is created within the cornea using a laser
- The lenticule is removed through a small incision
- No flap is created, potentially leading to faster visual recovery and less dry eye
The Laser Vision Correction Process
- Initial Consultation: Comprehensive eye exam and discussion of options
- Pre-operative Preparations: Instructions on medication and eye care
- Procedure: Usually takes about 15-30 minutes for both eyes
- Post-operative Care: Follow-up visits to monitor healing and vision improvement
Benefits of Laser Vision Correction for Astigmatism
- Significant improvement in vision quality
- Reduced dependence on glasses or contact lenses
- Potential for better night vision and reduced glare
- Long-lasting results
Is Laser Vision Correction Right for You?
Ideal candidates for laser vision correction of astigmatism typically:
- Are 18 years or older
- Have stable vision for at least a year
- Are free from certain eye diseases
- Are not pregnant or nursing
- Have realistic expectations about the outcomes
It’s important to note that not everyone with astigmatism is a suitable candidate for laser vision correction. Factors such as the severity of astigmatism, corneal thickness, and overall eye health play a role in determining eligibility.
Alternative Treatment Options
If laser vision correction isn’t suitable, other options include:
- Toric contact lenses
- Glasses with cylindrical lenses
- Orthokeratology (overnight corneal reshaping lenses)
- Implantable contact lenses (ICLs)
Consult with an eye care professional at Burjeel Day Surgery Center, Al Reem to determine the best treatment approach for your specific case of astigmatism.
